Sep. 08, 2025
Article content:
I. The raw materials and applications of plastic bottles
II. The advantages of plastic bottle recycling
III. The process of plastic bottle recycling
1. Raw materials and applications of plastic bottles
Plastic bottles are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Plastic bottles widely use polyester (PET), polyethylene (PE), and polypropylene (PP) as raw materials. After adding corresponding organic solvents, they are heated at high temperatures and then blown, extruded, or injection molded through plastic molds. plastic container.
Mainly used for liquid or solid disposable plastic packaging containers such as beverages, food, pickles, honey, dried fruits, edible oil, agricultural and veterinary drugs. Plastic bottles have the characteristics of not easily broken, low cost, high transparency, and food-grade raw materials.
2. Advantages of plastic bottle recycling
However, with the improvement of people's living standards, the use of plastic products continues to increase. As a common packaging container, plastic bottles are ubiquitous items in human daily life. However, if they are discarded at will, they will cause serious pollution to the environment. Therefore, recycling plastic bottles is crucial.
Recycling plastic bottles can reduce pollution to the natural environment. Recycling plastic bottles can effectively reduce the accumulation of garbage. It takes hundreds of years or even longer for plastic products to decompose in nature. A large number of plastic bottles are discarded in the natural environment, which not only affects the beauty of the landscape, but also affects the land and water sources. It causes long-term pollution, affects ecological balance, and may also cause harm to wild animals and plants. Through recycling, these plastic bottles can be processed and used again, reducing the negative impact on the natural environment.
Recycling plastic bottles helps conserve resources. The production of plastic bottles consumes a large amount of resources such as petroleum. Recycling and reuse can reduce the mining of new resources, help protect the environment and save energy.
Recycling plastic bottles can promote resource recycling. Through recycling and reprocessing, discarded plastic bottles can be converted into new plastic products, realizing the reuse of resources and extending the service life of resources.
Finally, recycling plastic bottles also creates jobs. The waste recycling industry is a booming field, and by recycling plastic bottles, more jobs can be created and economic development can be promoted.
3. Plastic bottle recycling process
The plastic bottle recycling machine is a mechanical equipment specially used to process and recycle waste plastic bottles. It mainly includes the following steps:
Unpacking, sorting and label removal of plastic bottles: Break up the compacted waste plastic bottles and sort them manually or automatically to remove impurities, metals and different types of plastic bottles for classification. At the same time, the labels carried on the plastic bottles are removed. The equipment is equipped with a screw loader and a bounce screen to remove impurities and dust carried on plastic bottles.
Plastic bottle crushing: The classified plastic bottles are sent to the crusher for crushing processing, which breaks large plastic bottles into uniform plastic flakes to prepare for subsequent processing.
Plastic bottle washing: The broken plastic sheets are cleaned through a cleaning machine to remove surface dirt and residues to ensure that the reused plastic particles are clean and pollution-free.
Plastic particle regeneration: The cleaned plastic flakes are reprocessed through a plastic granulator. After heating, compaction, extrusion, filtration, cutting, etc., recycled plastic particles or raw materials are finally produced, which can be used for the extrusion of new plastic products. .
The working principle of plastic bottle recycling equipment is to effectively process discarded plastic bottles through mechanical force and processing technology, realize the reuse of resources, and achieve the purpose of recycling.
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The plastic PP PE film washing and recycling line is an advanced system specifically designed for crushing, cleaning, dehydration, and drying of PP PE film and woven PP bags. This equipment offers several benefits, such as simple structure, easy operation, high output, low energy consumption, and enhanced safety and stability. By automating key processes, this line ensures a compact layout, high production efficiency, and a superior cleaning effect.
Simple Operation: Designed for ease of use, the machinery allows operators to handle waste materials with minimal manual intervention.
High Output: The recycling line maximizes throughput, ensuring that large volumes of waste can be processed efficiently.
Energy Efficiency: By optimizing power consumption, the line significantly reduces operational costs.
Safety and Stability: Built with the latest safety standards, the equipment ensures smooth, reliable operation.
The PE PP film and woven bag cleaning line has a wide range of applications, making it suitable for processing various waste materials. These include:
PP woven bags such as cement bags, bulk bags, and feed sacks.
PE film such as shopping bags, packaging films, industrial waste films, and agricultural films (mulch, greenhouse films).
PA nylon for industrial and consumer waste recovery.
Household waste plastics, including garbage bags, plastic wraps, and service packaging films.
Stretch films, winding films, and drip irrigation bags used in commercial and agricultural sectors.
This equipment efficiently handles waste materials like domestic plastic garbage, industrial packaging film, and agricultural plastic mulch, ensuring that all types of plastic film are thoroughly cleaned and processed for recycling.
One of the most common challenges in traditional plastic film recycling processes is limited capacity, especially when processing materials like woven bags and soft films. Traditional crushers often struggle to handle high volumes, leading to slow processing times and increased energy consumption.
Through innovations in spindle structure and the integration of an optimized shear angle, Retech’s crushers now process soft materials like PP PE film and woven bags with greater efficiency. The improved design has increased shear efficiency by 70%, allowing for higher throughput. Additionally, the new open spindle structure dramatically increases the line’s production capacity while keeping energy consumption low.
Another challenge in plastic recycling is achieving optimal humidity control. In traditional systems, films are often inadequately dried, leaving a moisture content as high as 10%. This high moisture content makes it difficult for recycled film to undergo granulation for reuse.
To address this, Retech has enhanced the drying process by extending the contact time with hot air, allowing for more effective moisture removal. The upgraded system includes both dehydration and drying processes, ensuring that the film reaches a moisture content of about 5%. Additionally, with the introduction of a film extruder, moisture is further reduced to under 3%, making the material ideal for film granulation and recycling.
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The extrusion drying process not only heats the material through the screw and flow channels but also expels the water through the mesh, resulting in a significantly lower moisture content. The film is then granulated into small particles, ready for reuse.
The core processes involved in plastic film recycling are designed for maximum efficiency and output quality. Here is a step-by-step outline of the production line:
Conveying the Film – The waste material is transported to the crusher.
Crushing – The material undergoes water-assisted crushing to reduce its size.
Rinsing – High-speed friction ensures that contaminants are thoroughly removed.
Dehydration – The film is wrung out to remove excess water.
Drying – After dehydration, the film is dried using a pipeline drying system, reducing moisture levels for further processing.
By incorporating friction cleaning, rinsing, extrusion dehydration, and drying, the recycling line transforms waste materials into clean, usable plastic films. For further moisture reduction, an optional wringing machine can be added, reducing moisture content to 2-5%, which prepares the film for granulation.
This set of crushing, cleaning, and recycling equipment is developed with a focus on the environmental protection standards required for waste plastic recycling globally. The equipment is specifically designed to handle soft floating plastics such as waste braided tape and films, ensuring that it meets the needs of industries looking for sustainable solutions.
By reintroducing recycled plastics into the supply chain, this technology reduces the need for virgin plastic production, making it an integral part of the circular economy.
Our R&D department has repeatedly tested and developed a new generation of efficient, water-saving plastic recycling equipment. The key features include:
Low energy consumption for reduced operational costs.
High output for large-scale recycling needs.
Attractive appearance for easy integration into modern facilities.
Reliable and durable components for long-term use.
The plastic PP PE film washing and recycling line is an ideal solution for industries looking to efficiently process waste plastics. With its high output, energy efficiency, and advanced drying technology, this equipment offers a comprehensive solution for recycling PP woven bags, PE films, and other soft plastic materials. By adopting this system, companies not only reduce waste but also contribute to environmental sustainability.
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